TILTABLE MULTIPLE-STAGED COAL BURNER IN A HORIZONTAL ARRANGEMENT

摘要

Horizontally arranged burners (100) for boiler furnaces are provided where each burner includes a fuel nozzle (138) surrounded by a secondary air outlet (123). The fuel nozzle (138) and secondary air outlets (123) may tilt in tandem with respect to an air plenum (104) supplying inner secondary air and a fuel carrier providing fuel. Also provided are outer secondary air buckets (152) that may independently tilt with respect to a frame connected to the air plenum. This arrangement can be installed as a retrofit in a conventional horizontal furnace system or in a newly built system. The fuel nozzle (138) and secondary air outlet (123), and secondary air buckets (152) may all tilt in unison or may all tilt independently. The tilting assists with optimizing a flame temperature profile within the furnace.